Box Filter
Box filtering is a type of convolution filtering in which every pixel is equally weighted causing the entire image to appear blurred. In other words it takes an average of each pixel segment. The average can be found by adding the total values of the pixels surrounding the main pixel and then divide by the same total number. This is the simplest way to design a filter.
Gaussian blurring is a type of convolution filtering in which every source pixel is not equally weighted. In fact, the weights are higher in the center than in the outer area of the image.
Edge Detection
Edge detection is a tool in image processing and computer vision. Edge detection filters search for borders between colours and their objects.
